Aluminum oxide ceramics with hydroxyapatite
The invention relates to a method for producing hydroxyapatite coated ceramics components. In a first step of the inventive method the ceramic component is provided with a Ti coating and in a second step a hydroxyapatite is applied to the Ti coating. The invention further relates to hydroxyapatite coated ceramic components produced according to the inventive method.
1. A method for producing a hydroxyapatite-coated ceramic core component having a Ti-containing layer comprising the steps of:
coating a ceramic core component comprising aluminum oxide with a titanium-containing layer, wherein the titanium-containing layer comprises at least one of Ti or a TiAl 6 V 4 -alloy, wherein the titanium-containing layer is up to 5 μm thick,
subjecting said titanium-containing layer to a sand blasting process to achieve a roughness of R a 40 to 50 μm, and
applying hydroxyapatite to the roughened titanium-containing layer to form the hydroxyapatite-coated ceramic component having a Ti-containing layer.
2. A method according to claim 1 , wherein the titanium-containing layer is applied by with a physical vapor deposition process.
3. A method according to claim 2 , wherein the titanium-containing layer is 1 μm thick.
4. A method according to claim 1 , wherein the titanium-containing layer is between 1 and 5 μm thick.
5. A method according to claim 1 , wherein the hydroxyapatite is sprayed onto the titanium-containing layer.
6. A method according to claim 1 , wherein the ceramic component consists of an aluminum oxide ceramic.
7. A method according to claim 1 , wherein the coated ceramic component is in the form of a medical device.
8. A method according to claim 1 , wherein the hydroxyapatite-coated ceramic component is a prosthesis.
9. The method of claim 1 , wherein the titanium-containing layer comprises the TiAl 6 V 4 -alloy.
10. A method comprising:
coating a ceramic component comprising at least one titanium-containing layer, wherein the titanium-containing layer comprises titanium or TiAl 6 V 4 -alloy and wherein the titanium-containing layer is up to 5 μm thick;
adjusting the titanium-containing layer by roughening to a roughness of R a 40 to 50 μm to form a roughened titanium-containing layer, wherein said roughening is conducted by sandblasting; and
applying hydroxyapatite to the roughened titanium-containing layer to form a hydroxyapatite-coated ceramic component.
11. The method of claim 10 , wherein the hydroxyapatite is applied by chemical vapor deposition.
12. A method according to claim 10 , wherein the coated ceramic component is formed as a medical device.
13. A method comprising the steps of:
coating a ceramic component, wherein the ceramic component comprises aluminum oxide, with a titanium-containing layer which is up to 5 μm thick, wherein the titanium-containing layer consists of at least one member selected from the group consisting of Ti or a TiAl 6 V 4 -alloy,
sandblasting the titanium-containing layer to achieve a roughness of R a 40 to 50 μm to form a roughened titanium-containing layer, and
applying hydroxyapatite to the roughened titanium-containing layer to form a hydroxyapatite-coated ceramic component.